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7th CBSE
IMPORTANT
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What term is used to describe the phenomenon due to which rays of light, while travelling from one optical medium to another optical medium deviate from their path?

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Important Questions on Light

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7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>Oral Questions>Q 2
What name is given to a piece of glass having one or two spherical surfaces?
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7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>Oral Questions>Q 3
Name the lens in which parallel rays of light on passing through it, meet at a point. (Write convex or concave)
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7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>Oral Questions>Q 4
Name a lens which always forms virtual and diminished image.
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7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>Oral Questions>Q 5
Sun rays on passing through moist air, after the rains, form a rainbow. What is the name of the phenomenon responsible for it? (Choose from: Dispersion/ Scattering/ Reflection)
EASY
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>EXERCISES>Q I
The property of light travelling in a straight line is called _____.
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7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>EXERCISES>Q I

The ray of light may be returned by the second optical medium into the first optical medium with a change in angle. This phenomenon is known as:

EASY
7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>EXERCISES>Q I
When the rays of light starting from a well illuminated object are reflected from a smooth polished surface in such a way that they meet at some other point or on a screen, then the image so formed is known as:
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7th CBSE
IMPORTANT
Learning Elementary Science for Class 7>Chapter 15 - Light>EXERCISES>Q I
When the rays starting from a well illuminated object are reflected from a smooth polished surface in such a way that they appear to meet at some other point, but cannot meet on a screen, then the image so formed is called _____.